Why is the sky so blue? Why is the sky so blue?

First of all, understand how light works, as light travels from the sun, it moves up and down like ocean waves, and when the wavelengths come together, we appear as if they are white.

To put it simply. The gases in the air are mainly transmitted to blue light (in visible light), and naturally appear blue.

Just like the sea mainly reflects blue light, so the sea looks blue.

The sky we see is often blue, especially after a heavy rain, the sky is even more blue like a pool of autumn water, which makes people feel refreshed and happy. Why is the sky blue?

The atmosphere itself is colorless. The blue of the sky is a picture created by large vertical gas molecules, ice crystals, water droplets, etc., and sunlight.

When sunlight enters the atmosphere, color light with a longer wavelength, such as red light, has a large transmission power and can penetrate the atmosphere to the ground; Violet, blue, and cyan light with short wavelengths is easily scattered when it hits atmospheric molecules, ice crystals, water droplets, etc. The scattered purple, blue, and cyan light fills the sky, making the sky appear blue.

First, the earth is surrounded by the atmosphere, and the sunlight must penetrate the atmosphere in order to reach the ground where we live.

Second, sunlight is composed of a variety of wavelengths of light (lasers are mostly single-wavelength rays), and each wavelength basically represents a visual color, and mixed light is visible to humans as white.

Third, the composition of the atmosphere is not single, and it is divided into many layers from the outside to the inside, each layer and each component will correspond to reflecting, refracting, and scattering a specific wavelength of light, and the blue, violet, indigo and other colored light with a shorter wavelength are scattered in all directions, making the sky appear blue.

This is the result of the color of the sea reflecting through the atmosphere. is a physical phenomenon.

Floating dust in the air scatters sunlight. Sunlight of a similar wavelength to blue is scattered more intensely. That's why the sky is blue.

In clear weather, there will be many tiny dust, water droplets, ice crystals and other substances in the air, when the sunlight passes through the air, the longer wavelength of the red light, orange light, yellow light in the sunlight can penetrate the atmosphere and directly hit the ground, and the shorter wavelength of blue, violet, indigo and other color light, is easily blocked by the particles suspended in the air, so that the light is scattered in all directions, making the sky appear blue.

The sky, like the sea, is due to the different refractive indices of different light, blue light has a short wavelength, and light with a short wavelength is absorbed or refracted by molecules, scattered, and the wavelength is long through molecules.

The reason is simple, the scattering of sunlight by the atmosphere makes the sky appear blue as we see.

The Earth's surface is surrounded by an atmosphere, and when sunlight enters the atmosphere, air molecules and particles (dust, water droplets, ice crystals, etc.) scatter sunlight around. Sunlight is composed of seven kinds of light: red, clear, yellow, green, blue, indigo, and violet, with red light having the longest wavelength and violet light having the shortest wavelength. Color light such as red light, which has a longer wavelength, has the greatest transmittance and can directly penetrate particles in the atmosphere to the ground.

Blue, indigo, violet and other colors with shorter wavelengths are easily scattered by particles in the atmosphere. In the shortwave band, blue light has the most energy and scatters the most light waves, so the sky we see appears blue.

In a blue sky, there is less water vapor in the air, and sunlight is scattered as it passes through the atmosphere. Blue-violet light, which has a relatively short wavelength, is more easily scattered, creating a blue sky.

Because the sun's irradiation blocks part of the color by something in the atmosphere, the refracted color becomes blue.

When the sky is clear, the sky is very difficult. The sky is cloudless, and the blue sky and white clouds are a symbol of clear weather.

It is mainly related to the wavelength characteristics of various lights, the wavelength of different lights is different, the long wavelength can penetrate the atmosphere, the short one will be blocked and scattered, and the blue light wavelength is shorter.

Why is the sky so blue? Because the weather is good, the sky is very blue, and looking at the blue sky, I feel very happy, and I am very happy to do everything, so I want to give us a good mood.

Because that's how blue the sky is.

Because there is no environmental pollution, the blue sky is the original color of the sky. I wish it was a blue sky every day.

Sky blue, that's a good environment, and the natural hue is blue sky.

The sky is blue, what a beautiful picture, it is the wealth that nature has given us to protect the environment.

First, the general blue sky indicates the air***.

Second, blue skies indicate less pollution.

Third, in winter, for example, the car excludes less exhaust gas, such as less heating.

If the weather is good, the sky will be very blue.

Because that color of the sky is called blue.

The sky is not actually blue, but it is reflected blue because the sea is blue.

Khan, he also tells mythological stories. Because the earth we live in is surrounded by this thick atmosphere, sunlight shines through the atmosphere into the earth. There is a substance in the atmosphere called ozone, which can absorb ultraviolet rays, but ozone itself is also pale blue, because the atmosphere is thicker and more ozone, when you look up at the sky, the sky becomes blue.